Securing PC from the network

[deaconbeak]

Hi there, i wonder if u can help me......
i have got ADSL, with a router to access the net. i was using my PC fine when....my brother came home to stay for a bit. he's got his own PC he's gonna gonnect 2 the router. Is there anyway i can TRULY lock out anyone else screwing with my pc on our LAN??

I was worried about this cos my bro has this friend whos a real pro with PC's.......now i work in I.T.......... but this guy is a major geek!! i was even gonna move to Linux while he's with us.....I dont wanna have 2 do that but.......
would that mean he cant access my PC using his Windows XP PC

anyway any advice is much apreciated.

[brainlag]

The only real way would be to remove your computer from the network. Moving to Linux won't really help unless you really know your distro and have it locked down.

If you're really that worried, don't let them use your network and the problem is avoided.

[deaconbeak]

could I put my PC on the DMZ on the router, wouldnt that make my pc not accessible from within the network??

any other suggestions? like locking down the pc using windows 2000/xp local policys?? or how about encrypting my files??? and decrypt them off the network to use them